For the past 5000 years there was a highly active social and religious organisations in the Indian society which were doing a remarkable job. Those organisations have discouraged or prohibited certain activities like kissing. This was not due to moralism but because of the health consequences. Now a research from Netherlands says that a kiss of 10 seconds between partners can transfer 80 million bacteria.
Indians were scientifically advanced which was couched in spiritualism. Better to understand and live according to the Indian traditions and customs!
Times of India reports on 17 November 2014
A long intimate kiss has now been found to do more that make your blood race. Scientists have found that a 10 second kiss leads to the transfer of as many as 80 million bacteria between partners.
Partners who kiss each other at least nine times a day end up sharing billions of bacteria thereby ending up with a similar community of oral bacteria. Bacteria in the human mouth play a vital role – from helping us digest food to synthesizing nutrients and preventing disease.
Humans have in them an ecosystem of more than 100 trillion microorganisms that thrive inside us – popularly called the microbiome. It is shaped by genetics, diet and age, but also the individuals with whom we interact. With the mouth playing host to more than 700 varieties of bacteria, the oral microbiota also appear to be influenced by those closest to us.
Researchers from Netherlands studied 21 couples, asking them to fill out questionnaires on their kissing behaviour including their average intimate kiss frequency. They then took swab samples to investigate the composition of their oral microbiota on the tongue and in their saliva. The results showed that when couples intimately kiss at relatively high frequencies their salivary microbiota become similar. On average it was found that at least nine intimate kisses per day led to couples having significantly shared salivary microbiota.
In a controlled kissing experiment to quantify the transfer of bacteria, a member of each of the couples had a probiotic drink containing specific varieties of bacteria including Lactobacillus and Bifidobacteria. After an intimate kiss, the researchers found that the quantity of probiotic bacteria in the receiver’s saliva rose threefold and calculated that in total 80 million bacteria would have been transferred during a 10 second kiss.
The study also suggests an important role for other mechanisms that select oral microbiota, resulting from a shared lifestyle, dietary and personal care habits, and this is especially the case for microbiota on the tongue. The researchers found that while tongue microbiota were more similar among partners than unrelated individuals, their similarity did not change with more frequent kissing, in contrast to the findings on the saliva microbiota.
Commenting on the kissing questionnaire results, the researchers say that an interesting but separate finding was that 74% of the men reported higher intimate kiss frequencies than the women of the same couple. This resulted in a reported average of ten kisses per day from the males, twice that of the female reported average of five per day.
Lead author Remco Kort said “Intimate kissing involving full tongue contact and saliva exchange appears to be courtship behaviour unique to humans and is common in over 90% of known cultures. Interestingly, the current explanations for the function of intimate kissing in humans include an important role for the microbiota present in the oral cavity, although to our knowledge, the exact effects of intimate kissing on the oral microbiota have never been studied. We wanted to find out the extent to which partners share their oral microbiota and it turns out, the more a couple kiss, the more similar they are”.